Multi-room particle therapy room, radiotherapy system, and particle accelerator movement method

Abstract

The present application belongs to the technical field of high-end medical equipment. Disclosed are a multi-room particle therapy room, a radiotherapy system, and a particle accelerator movement method. The multi-room particle therapy room comprises a plurality of treatment rooms. The radiotherapy system comprises the multi-room particle therapy room and a particle accelerator. Each treatment room is provided with a beam window. The particle accelerator can move outside different treatment rooms and is aligned with the beam windows. The particle accelerator directs particle beams into the treatment rooms by means of the beam windows. The particle beams perform radiotherapy by means of therapy heads in the treatment rooms. The radiotherapy system is not provided with a dipole magnet or a quadrupole magnet. The plurality of treatment rooms share one particle accelerator. The particle accelerator is moved to the outside of the treatment room requiring the particle beam, and the particle beam is directed into the treatment room by means of the beam window. When the treatment in the treatment room is completed, the particle accelerator is moved to other treatment rooms requiring the particle beams and performs treatment work, thereby reducing the overall cost of the radiotherapy system and making proton therapy accessible.

Description

Multi-chamber particle therapy room, radiotherapy system and particle accelerator moving method

[0001] This application claims priority to the Chinese patent application No. 202410973537.X, filed on July 19, 2024, which is incorporated by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the technical field of high-end medical equipment, in particular to a multi-chamber particle therapy room, a radiotherapy system and a particle accelerator moving method. BACKGROUND

[0003] Radiotherapy is a treatment that uses high-energy particle beams to penetrate human tissues and destroy the DNA of cancer cells, preventing their growth and division, thereby achieving the purpose of treatment. Radiotherapy can provide more accurate and effective treatment and reduce side effects during treatment, thereby improving the quality of life of patients. Among them, the particle accelerator is the core component of the radiotherapy system, and the particle accelerator is used to generate particle beams.

[0004] A radiotherapy system generally includes a particle accelerator, a set of beam transport lines and multiple treatment rooms. The particle accelerator is fixedly arranged to generate particle beams, and the particle beams are transported to each treatment room through the beam transport lines for treatment of patients. The beam transport line is usually composed of a vacuum pipe, a dipole magnet and a quadrupole magnet. The vacuum pipe is used to reduce the divergence of the particle beam during transmission. At the particle beam turning position, a dipole magnet is needed to deflect the particle beam. A plurality of sets of quadrupole magnets are arranged on the beam transport line to provide focusing for the particle beam. This results in a larger size and higher cost of the beam transport line, which increases the construction cost of the radiotherapy system. On the other hand, during the debugging stage of the radiotherapy system, each dipole magnet and quadrupole magnet needs to be debugged along the beam transport line, which takes a long time.

[0005] How to reduce the construction cost of the radiotherapy system is a difficult problem that needs to be solved urgently. SUMMARY

[0006] The purpose of the present application is to provide a multi-chamber particle therapy room, a radiotherapy system and a particle accelerator moving method for reducing the construction cost.

[0007] The purpose of the present application is achieved by the following technical solution:

[0008] A multi-chamber particle therapy room, comprising:

[0009] A plurality of treatment rooms, each of which is provided with an entrance and a beam window corresponding to a beam exit end of a particle accelerator outside the treatment room, the beam window and the entrance being arranged on different sides of the treatment room.

[0010] The treatment room is not provided with a particle accelerator, and is not provided with a scanning magnet, a dipole magnet or a quadrupole magnet, and is provided with a treatment head corresponding to the beam window, and has an isocenter, the beam window is arranged to be closed and opened at different times respectively, and the beam window is arranged to be opened when the beam outlet end of the particle accelerator moves to correspond to the beam window;

[0011] The treatment room comprises a front wall, a rear wall, a left side wall and a right side wall, the entrance is arranged between the front wall and the left side wall, the beam window is separated from the entrance by a partition wall, the partition wall is connected to the left side wall, the partition wall is spaced apart from the right side wall to form an opening for the patient to pass through, the beam window is formed through the rear wall, and the treatment head is mounted on the inner side of the rear wall; in the direction of the beam passing through the beam window, the projection of the isocenter on the partition wall is located within the projection of the beam window on the partition wall;

[0012] The treatment room further comprises a support device for carrying the patient and moving the patient to the isocenter so that the beam irradiates the patient in a predetermined direction.

[0013] In some optional embodiments, the treatment head is arranged to be retractable along the through direction of the beam window.

[0014] In some optional embodiments, the treatment head is fixedly mounted on the rear wall, the treatment room does not have a rotating gantry, and the beam outlet direction of the treatment head is fixed.

[0015] A radiotherapy system comprises:

[0016] The multi-room particle treatment room according to any one of the preceding embodiments;

[0017] A particle accelerator for generating a particle beam, the particle accelerator is one, capable of moving to different treatment rooms outside and aligning with the beam window, the particle accelerator irradiates the particle beam into the treatment room through the beam window, the particle beam is irradiated by the treatment head in the treatment room for radiotherapy, and the radiotherapy system does not have a dipole magnet or a quadrupole magnet.

[0018] In some optional embodiments, a carrying table, a driving assembly and a control assembly are further included, the control assembly comprises a controller for controlling the driving assembly, the particle accelerator is arranged on the carrying table, the driving assembly is used to drive the carrying table to move, the carrying table is used to drive the particle accelerator to move, and the movement mode of the particle accelerator comprises one or more of horizontal translation, vertical translation, horizontal rotation and vertical rotation.

[0019] In some optional embodiments, the driving assembly comprises a translation driving mechanism for driving the carrier platform to translate so as to translate the particle accelerator to different treatment rooms outside; and / or,

[0020] The driving assembly further comprises a rotation driving mechanism for driving the carrier platform to rotate so as to rotate the particle accelerator to different treatment rooms outside.

[0021] In some optional embodiments, the control assembly further comprises a first position sensor connected with the translation driving mechanism and / or the rotation driving mechanism, the first position sensor being configured to detect the rotation movement of the translation driving mechanism and / or the rotation driving mechanism to obtain the position information of the carrier platform; and / or,

[0022] The control assembly further comprises a second position sensor connected with the carrier platform or the particle accelerator, the second position sensor being configured to detect the position information of the carrier platform or the particle accelerator.

[0023] In some optional embodiments, the driving assembly further comprises an adjusting device arranged on the carrier platform, the adjusting device comprising an X-direction driving mechanism, a Y-direction driving mechanism and a Z-direction driving mechanism, the X-direction driving mechanism being configured to drive the particle accelerator to translate along an X-axis and / or to rotate the particle accelerator around the X-axis, the Y-direction driving mechanism being configured to drive the particle accelerator to translate along a Y-axis and / or to rotate the particle accelerator around the Y-axis, and the Z-direction driving mechanism being configured to drive the particle accelerator to translate along a Z-axis and / or to rotate the particle accelerator around the Z-axis, the X-direction, the Y-direction and the Z-direction being perpendicular to each other.

[0024] In some optional embodiments, the control assembly further comprises a third position sensor connected with the particle accelerator, the third position sensor being configured to detect the position information of the particle accelerator.

[0025] In some optional embodiments, a shielding door is arranged on the treatment room, the shielding door being configured to close or open the beam window, and the isocenter of the shielding door being located on the two sides of the beam window, respectively; and / or,

[0026] A shielding door is arranged on the carrier platform, the shielding door being capable of moving with the carrier platform, and the shielding door being configured to close the beam window of other treatment rooms when the particle accelerator moves to the beam window of one of the treatment rooms.

[0027] In some alternative embodiments, a track is further included, the particle accelerator is arranged on the track, the particle accelerator moves to different treatment rooms outside through the track, and the track extends in parallel with the central line of the beam window.

[0028] In some alternative embodiments, a limiting device for aligning with the beam window in the front-back direction is arranged on the path of the particle accelerator, the limiting device is used for marking the moving position of the particle accelerator, a scanning magnet is installed on the particle accelerator, and the particle accelerator moves in a radiation shielded space.

[0029] A particle accelerator moving method for moving the particle accelerator of the radiotherapy system according to any one of the preceding embodiments, comprising the following steps:

[0030] The particle accelerator is moved to a first treatment room requiring a particle beam, the particle accelerator is docked with the beam window of the first treatment room, and after the beam window is opened, the particle accelerator starts to emit a particle beam and irradiates the particle beam into the first treatment room through the beam window, and the particle beam is used for radiotherapy by a treatment head in the first treatment room.

[0031] When the first treatment room completes the radiotherapy, the particle accelerator stops emitting the particle beam, and then moves to a second treatment room requiring a particle beam and is docked with the beam window of the second treatment room, and then starts to emit the particle beam.

[0032] In some alternative embodiments, the method for moving the particle accelerator to the treatment room requiring a particle beam comprises:

[0033] translating to the treatment room requiring a particle beam through the translation driving mechanism; and / or,

[0034] rotating the particle accelerator to the treatment room requiring a particle beam through the rotation driving mechanism; and / or,

[0035] precisely adjusting the position of the particle accelerator in six degrees of freedom through the X-direction driving mechanism, the Y-direction driving mechanism and the Z-direction driving mechanism of the adjusting device, so as to accurately align the particle accelerator with the beam window of the treatment room.

[0036] The multi-chamber particle treatment room, the radiotherapy system and the particle accelerator moving method provided in the present application have at least the following advantages:

[0037] The multi-chamber particle treatment chamber, the radiotherapy system and the particle accelerator moving method of the present application, multiple treatment chambers share a movable particle accelerator, the overall space utilization is more efficient, by moving the particle accelerator outside the treatment chamber that needs particle beams, the particle accelerator shoots particle beams into the treatment chamber through the beam window, the particle beams are treated through the treatment head in the treatment chamber, other treatment chambers can be synchronized to prepare for treatment without particle beams, when the treatment chamber is completed, the particle accelerator moves outside the treatment chamber that needs particle beams and allows the treatment chamber that needs particle beams to work. Since the particle accelerator can be moved outside the treatment chamber that needs particle beams, the utilization rate of the particle accelerator is improved, which is beneficial to improve the efficiency of radiotherapy and benefit more patients. The radiotherapy system of the present application does not need to set up a beam transport line, on the one hand, it reduces the overall size of the radiotherapy system and reduces the overall cost of the radiotherapy system, on the other hand, it does not need to debug the beam transport line, which reduces the debugging difficulty of the radiotherapy system, shortens the debugging time of the radiotherapy system, and further reduces the overall cost. BRIEF DESCRIPTION OF DRAWINGS

[0038] Fig. 1 is a perspective structural schematic diagram of a radiotherapy system according to an embodiment of the present application.

[0039] Fig. 2 is a plan structural schematic diagram of a radiotherapy system according to an embodiment of the present application.

[0040] Fig. 3 is a partial enlarged view of A in Fig. 1.

[0041] Fig. 4 is a perspective structural schematic diagram of another radiotherapy system according to an embodiment of the present application.

[0042] Fig. 5 is a plan structural schematic diagram of another radiotherapy system according to an embodiment of the present application.

[0043] Fig. 6 is a perspective structural schematic diagram of another radiotherapy system according to an embodiment of the present application.

[0044] Fig. 7 is a plan structural schematic diagram of another radiotherapy system according to an embodiment of the present application.

[0045] Fig. 8 is a plan structural schematic diagram of a shielding door arranged on a bearing table according to an embodiment of the present application.

[0046] Fig. 9 is a flow schematic diagram of a particle accelerator moving method according to an embodiment of the present application.

[0047] In the figure: 100, a radiotherapy system; 1, a treatment room; 10, an entrance; 11, a beam window; 12, a front wall; 13, a back wall; 14, a left side wall; 15, a right side wall; 16, a partition wall; 17, an opening; 18, an isocenter; 2, a particle accelerator; 21, a beam exit end; 22, a particle beam; 3, a support table; 4, a drive assembly; 41, a translational drive mechanism; 42, a rotational drive mechanism; 43, an adjustment device; 5, a control assembly; 51, a controller; 6, a track; 7, a limiting device; 8, a shielding door; 9, a treatment head. DETAILED DESCRIPTION

[0048] Example embodiments now will be described more fully hereinafter with reference to the accompanying drawings; however, the example embodiments can be implemented in many different forms and should not be construed as limited to the implementations set forth herein; rather, these implementations are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the example embodiments to those skilled in the art. Like reference numerals refer to like elements throughout the several views and figures of the drawings.

[0049] The words expressing position and direction described in this application are described with reference to the drawings, but changes can be made according to needs, and the changes made are included in the protection scope of this application.

[0050] Referring to FIGS. 1 to 8, the present application provides a radiotherapy system 100, comprising: a multi-chamber particle treatment room and a particle accelerator 2, the multi-chamber particle treatment room comprising: a plurality of treatment rooms 1, each of which is provided with an entrance 10 for a patient to enter and a beam window 11 corresponding to a beam exit end 21 of the particle accelerator 2 outside the treatment room 1, the beam window 11 and the entrance 10 being arranged on different sides of the treatment room 1. The particle accelerator 2 is not arranged in the treatment room 1, and no scanning magnet, dipole magnet or quadrupole magnet is arranged in the treatment room 1, which optimizes the layout of the treatment room 1 and is conducive to reducing the cost of the radiotherapy system 100. The treatment room 1 is provided with a treatment head 9 corresponding to the beam window 11, the treatment head 9 being fixed or arranged to be retractable relative to the patient, and the treatment room 1 has an isocenter 18, the beam window 11 being arranged to be closed and opened at different times, and the beam window 11 being arranged to be opened when the beam exit end 21 of the particle accelerator 2 moves to correspond to the beam window 11, i.e., the beam window 11 is opened only when the beam needs to pass through the beam window 11.

[0051] The treatment room 1 can include a front wall 12, a rear wall 13, a left side wall 14, a right side wall 15, an entrance 10 arranged between the front wall 12 and the left side wall 14, a beam window 11 separated from the entrance 10 by a partition wall 16, i.e. the beam window 11 is blocked by the partition wall 16 between the entrance 10, the partition wall 16 is connected to the left side wall 14, the partition wall 16 is spaced apart from the right side wall 15 to form an opening 17 for the patient to pass through, and the beam window 11 penetrates through the rear wall 13. In the direction of the beam passing through the beam window 11, the projection of the isocenter 18 on the partition wall 16 is located within the projection of the beam window 11 on the partition wall 16, so that the structure of the treatment room 1 is more compact, the movement path of the beam is optimized, the transmission time of the beam is saved, and the improvement of the treatment efficiency is further guaranteed. In the direction of the beam passing through the beam window 11, the entrance 10 and the opening 17 can be optionally arranged on the two sides of the beam window 11 and the treatment head 9 respectively, so that the structure of the treatment room 1 is compact and the overall size of the treatment room 1 is reduced, which is conducive to the development of miniaturization.

[0052] The particle accelerator 2 can provide the particle beam 22 for the treatment room 1, and multiple treatment rooms 1 share one particle accelerator 2, which reduces the cost of the radiotherapy system 100. That is, the radiotherapy system 100 can include multiple treatment rooms 1 and one particle accelerator 2, or multiple treatment rooms 1 and multiple particle accelerators 2, wherein the number of treatment rooms 1 is greater than the number of particle accelerators 2.

[0053] Specifically, each treatment room 1 is provided with a beam window 11, and the beam window 11 is used for the particle beam 22, i.e. the beam, generated by the particle accelerator 2 to pass through so that the particle beam 22 can reach the patient's treatment site located in the treatment room 1. The beam window 11 is arranged on the side of the treatment room 1 facing the particle accelerator 2, and the shape of the beam window 11 is, for example, rectangular, but can also be other shapes, as long as it can ensure that the particle beam 22 generated by the particle accelerator 2 passes through. As shown in FIG. 2, various treatment heads 9 and support devices (not shown) can also be arranged in each treatment room 1, and the treatment room 1 does not have a particle accelerator 2 or a rotating gantry, which simplifies the structure of the treatment room 1. The treatment head 9 is used for treating the patient, and the treatment head 9 can cooperate with the particle beam 22 generated by the particle accelerator 2 to perform radiotherapy, i.e. the particle beam 22 is treated after passing through the treatment head 9. The treatment head 9 can be telescopic along the direction of the beam window 11, so that more accurate and effective treatment can be achieved, and the patient's treatment experience and safety can be improved. In this embodiment, the treatment head 9 can be installed and fixed to the inner side of the rear wall 13 to extend into the inside of the treatment room 1, and the treatment room 1 does not have a rotating gantry, and the beam direction of the treatment head 9 is fixed. The support device is used to support the patient and move the patient along various angles, i.e. the support device is used to carry the patient and move the patient to the isocenter 18 so that the beam irradiates the patient along the predetermined direction, and the support device is, for example, a treatment chair, a treatment bed, etc.

[0054] The particle accelerator 2 is used to generate a particle beam 22, the particle accelerator 2 can be moved to different treatment rooms 1 and aligned with the beam window 11, the particle accelerator 2 shoots the particle beam 22 into the treatment room 1 through the beam window 11, and the particle beam 22 is radiated by the treatment head 9 in the treatment room 1. In some embodiments, the radiation therapy system 100 and its particle accelerator 2 do not have a beam transport line, a vacuum pipe, a dipole magnet or a quadrupole magnet on the path of the beam after the beam is extracted from the particle accelerator 2, which simplifies the overall design, reduces the cost, avoids the energy consumption of the beam transport line, is more low-carbon, and meets the development trend of technology. The particles can be protons or heavy ions, and the particle accelerator 2 is, for example, a proton accelerator, which can generate a proton beam. Of course, the particle accelerator 2 can also be other types of particle accelerators, which can be set according to actual needs. The moving direction of the particle accelerator 2 is not parallel to the beam direction of the treatment head 9 (the direction of the particle beam 22 flowing out of the treatment head 9), so that the radiation therapy system 100 is compact in structure, reduces the overall size of the radiation therapy system 100, and is beneficial to the development of miniaturization.

[0055] As an optional way, referring to FIGS. 1-5, the radiation therapy system 100 can also include a track 6, the track 6 is arranged outside the treatment room 1, the particle accelerator 2 is arranged on the track 6 and located in the radiation shielding space together, and the particle accelerator 2 moves to different treatment rooms 1 through the track 6. The extension direction of the track 6 can be parallel to the extension direction of the center line of the beam window 11. The distribution of the track 6 corresponds to the distribution of the plurality of treatment rooms 1, and the particle accelerator 2 can be moved to different treatment rooms 1 along the track 6, so that the particle accelerator 2 can be moved along the predetermined path. The track 6 is further optional as a slide rail, so that the particle accelerator 2 moves more smoothly and stably, which is convenient for personnel operation and avoids or reduces the fatigue degree of personnel operation.

[0056] In the present application, the plurality of treatment rooms 1 share one particle accelerator 2, which reduces the number of particle accelerators 2 required, greatly reducing the construction cost of the radiotherapy system 100. By moving the particle accelerator 2 outside the treatment room 1 that needs the particle beam 22, the particle accelerator 2 shoots the particle beam 22 into the treatment room 1 through the beam window 11, and the particle beam 22 performs radiotherapy through the treatment head 9 in the treatment room 1. Other treatment rooms 1 can simultaneously perform treatment preparation processes that do not require the particle beam 22, such as patient positioning. When the treatment room 1 completes the treatment, the particle accelerator 2 moves to another treatment room 1 that needs the particle beam 22 and performs treatment work, which reduces the waiting time of the particle accelerator 2, improves the use efficiency of the particle accelerator 2, improves the treatment efficiency, and is beneficial to treating more patients. Since the particle accelerator 2 can be moved to the treatment room 1 that needs the particle beam 22, the radiotherapy system 100 of the present application does not need to be provided with a beam transport line, which on the one hand reduces the overall size of the radiotherapy system 100, saves the cost of the beam transport line, and further reduces the overall cost of the radiotherapy system 100, and on the other hand does not need to debug the beam transport line, which reduces the debugging difficulty of the radiotherapy system 100, shortens the debugging time of the radiotherapy system 100 and the construction period of the radiotherapy system 100, and is beneficial to the radiotherapy system 100 being put into use as soon as possible to benefit patients.

[0057] In a specific embodiment, the movement mode of the particle accelerator 2 includes one or more of horizontal translation, vertical translation, horizontal rotation, and vertical rotation. In some embodiments, the movement mode of the particle accelerator 2 can also be flipping. The movement mode of the particle accelerator 2 corresponds to the distribution position of the treatment room 1, that is, the movement path of the particle accelerator 2 depends on the distribution position of the treatment room 1, or in other words, the movement path of the particle accelerator 2 determines the distribution position of the treatment room 1. The arrangement and distribution of the plurality of treatment rooms 1 can be set according to actual needs, and the position of the particle accelerator 2 corresponds to the arrangement and distribution of the treatment room 1, as long as the particle accelerator 2 can be moved outside the treatment room 1 and aligned with the beam window 11.

[0058] As an example, referring to FIGS. 1 and 2, the plurality of treatment rooms 1 are arranged in a single row in the horizontal plane, and the particle accelerator 2 is located on the same side of the plurality of treatment rooms 1. The particle accelerator 2 can be translated in the horizontal direction to move outside different treatment rooms 1 and be aligned with the beam window 11. That is, when one of the treatment rooms 1 needs the particle accelerator 2, the particle accelerator 2 can be translated in the horizontal direction to move outside the treatment room 1 that needs the particle accelerator 2, the particle accelerator 2 shoots the particle beam 22 into the treatment room 1 through the beam window 11, and the particle beam 22 performs radiotherapy through the treatment head 9 in the treatment room 1. Other treatment rooms 1 can perform treatment preparation processes that do not require the particle beam 22, such as patient positioning.

[0059] Referring to FIGS. 4 and 5, the plurality of treatment rooms 1 are arranged in a single row in the vertical direction, i.e., the plurality of treatment rooms 1 are stacked, and the particle accelerator 2 is located at the same side of the plurality of treatment rooms 1, and the particle accelerator 2 can be translated in the vertical direction to move outside the different treatment room 1 and align with the beam window 11. That is, when one of the treatment rooms 1 needs the particle accelerator 2, the particle accelerator 2 can be translated in the vertical direction to outside the treatment room 1 needing the particle accelerator 2, and the particle accelerator 2 shoots the particle beam 22 into the treatment room 1 through the beam window 11, and the particle beam 22 performs radiotherapy through the treatment head 9 in the treatment room 1, and the other treatment rooms 1 can perform a treatment preparation process not needing the particle beam 22, such as patient positioning.

[0060] Two treatment rooms 1 are respectively arranged at both sides of the particle accelerator 2 in the horizontal plane, or, referring to FIGS. 6, 7 and 8, the plurality of treatment rooms 1 are arranged around the particle accelerator 2 in the horizontal plane, and the particle accelerator 2 can be rotated in the horizontal direction to move outside the different treatment room 1 and align with the beam window 11. That is, when one of the treatment rooms 1 needs the particle accelerator 2, the particle accelerator 2 can be rotated in the horizontal direction to outside the treatment room 1 needing the particle accelerator 2, and the particle accelerator 2 shoots the particle beam 22 into the treatment room 1 through the beam window 11, and the particle beam 22 performs radiotherapy through the treatment head 9 in the treatment room 1, and the other treatment rooms 1 can perform a treatment preparation process not needing the particle beam 22, such as patient positioning.

[0061] The plurality of treatment rooms 1 are respectively arranged at both sides of the particle accelerator 2 in the horizontal plane, and the particle accelerator 2 can be rotated in the horizontal direction and translated in the horizontal direction to move outside the different treatment room 1 and align with the beam window 11. That is, when one of the treatment rooms 1 needs the particle accelerator 2, the particle accelerator 2 can be rotated in the horizontal direction and / or translated in the horizontal direction to outside the treatment room 1 needing the particle accelerator 2, and the particle accelerator 2 shoots the particle beam 22 into the treatment room 1 through the beam window 11, and the particle beam 22 performs radiotherapy through the treatment head 9 in the treatment room 1, and the other treatment rooms 1 can perform a treatment preparation process not needing the particle beam 22, such as patient positioning.

[0062] Two treatment rooms 1 are respectively arranged on two sides of the particle accelerator 2 in the vertical direction, or a plurality of treatment rooms 1 are arranged around the particle accelerator 2 in the vertical direction, and the particle accelerator 2 can rotate in the vertical direction to move outside different treatment rooms 1 and align with the beam window 11. That is, when one of the treatment rooms 1 needs the particle accelerator 2, the particle accelerator 2 can rotate in the vertical direction to move outside the treatment room 1 that needs the particle accelerator 2, the particle accelerator 2 shoots the particle beam 22 into the treatment room 1 through the beam window 11, and the particle beam 22 performs radiotherapy through the treatment head 9 in the treatment room 1. Other treatment rooms 1 can perform treatment preparation processes that do not need the particle beam 22, such as patient positioning.

[0063] Two treatment rooms 1 are respectively arranged on two sides of the particle accelerator 2 in the vertical direction, or a plurality of treatment rooms 1 are arranged around the particle accelerator 2 in the vertical direction, and the particle accelerator 2 can rotate in the vertical direction to move outside different treatment rooms 1 and align with the beam window 11. That is, when one of the treatment rooms 1 needs the particle accelerator 2, the particle accelerator 2 can rotate in the vertical direction and / or translate in the vertical direction to move outside the treatment room 1 that needs the particle accelerator 2, the particle accelerator 2 shoots the particle beam 22 into the treatment room 1 through the beam window 11, and the particle beam 22 performs radiotherapy through the treatment head 9 in the treatment room 1. Other treatment rooms 1 can perform treatment preparation processes that do not need the particle beam 22, such as patient positioning.

[0064] As an optional mode, referring to FIGS. 1 to 8, the radiotherapy system 100 can further include a bearing table 3, a driving assembly 4, and a control assembly 5. Referring to FIGS. 1 and 2, the control assembly 5 includes a controller 51, and the driving assembly 4 and the controller 51 can be connected through wires or can be wirelessly connected, and the controller 51 is used to control the driving assembly 4. The particle accelerator 2 is arranged above the bearing table 3, the driving assembly 4 is used to drive the bearing table 3 to move, and the bearing table 3 is used to drive the particle accelerator 2 to move. In this embodiment, the bearing table 3 can be arranged on a track 6, and the driving assembly 4 can drive the bearing table 3 to move along the track 6 and drive the particle accelerator 2 to move. The driving assembly 4 can be one or more of various power devices such as pneumatic, electric, hydraulic, etc. By driving the particle accelerator 2 to move through the driving assembly 4, the particle accelerator 2 is automatically operated, which not only improves the moving accuracy and efficiency of the particle accelerator 2, thereby improving the use efficiency of the particle accelerator 2 and improving the treatment effect, but also reduces the labor intensity of personnel, and personnel can be away from the particle accelerator 2 to avoid harm from electromagnetic radiation.

[0065] Specifically, referring to FIG. 1, FIG. 2, FIG. 3 and FIG. 5, the driving assembly 4 can comprise a translation driving mechanism 41 for driving the carrier platform 3 to translate so as to translate the particle accelerator 2 to different treatment rooms 1. That is, the translation driving mechanism 41 can drive the carrier platform 3 to translate in a horizontal direction or in a vertical direction, and then the carrier platform 3 drives the particle accelerator 2 to translate in the horizontal direction or in the vertical direction. The translation driving mechanism 41 can be a driving motor, which can drive the carrier platform 3 to move along the track 6 and drive the particle accelerator 2 to move, so that the particle accelerator 2 is translated to different treatment rooms 1 and aligned with the beam window 11, and the particle accelerator 2 emits the particle beam 22 into the treatment room 1 through the beam window 11, and the particle beam 22 performs radiotherapy through the treatment head 9 in the treatment room 1.

[0066] Referring to FIG. 7 and FIG. 8, the driving assembly 4 can further comprise a rotation driving mechanism 42 for driving the carrier platform 3 to rotate so as to rotate the particle accelerator 2 to different treatment rooms 1. That is, the rotation driving mechanism 42 can drive the carrier platform 3 to rotate in a horizontal direction or in a vertical direction, and then the carrier platform 3 drives the particle accelerator 2 to rotate in the horizontal direction or in the vertical direction. In some embodiments, the rotation driving mechanism 42 can drive the carrier platform 3 to overturn, and then the carrier platform 3 drives the particle accelerator 2 to overturn. The rotation driving mechanism 42 can also be a driving motor, which can drive the carrier platform 3 to rotate and drive the particle accelerator 2 to rotate, so that the particle accelerator 2 is rotated to different treatment rooms 1 and aligned with the beam window 11, and the particle accelerator 2 emits the particle beam 22 into the treatment room 1 through the beam window 11, and the particle beam 22 performs radiotherapy through the treatment head 9 in the treatment room 1.

[0067] As an optional mode, the control assembly 5 can further comprise a first position sensor (not shown), which is connected with the translation driving mechanism 41 and / or the rotation driving mechanism 42, and can also be connected with the controller 51. The first position sensor is used to detect the rotation movement of the translation driving mechanism 41 and / or the rotation driving mechanism 42 to obtain the position information of the carrier platform 3. The first position sensor is, for example, a rotary encoder. When the first position sensor can be coupled on the translation driving mechanism 41, the first position sensor can detect the rotation number and rotation direction of the translation driving mechanism 41, that is, the distance of the carrier platform 3 moving can be obtained by calculation, so as to obtain the real-time position information of the carrier platform 3, and then obtain the real-time position information of the particle accelerator 2. By comparing the real-time position information of the particle accelerator 2 with the preset position information of the particle accelerator 2, it can be judged whether the particle accelerator 2 is aligned with the beam window 11.

[0068] When the first position sensor can be coupled on the rotating driving mechanism 42, the first position sensor can detect the rotating number and rotating direction of the rotating driving mechanism 42, that is, the angle of the rotating of the bearing table 3 can be calculated to obtain the real-time position information of the bearing table 3, and then the real-time position information of the particle accelerator 2 is obtained. By comparing the real-time position information of the particle accelerator 2 with the preset position information of the particle accelerator 2, it can be judged whether the particle accelerator 2 is aligned with the beam window 11.

[0069] The first position sensor can feed back the position information of the particle accelerator 2 to the controller 51, and the controller 51 controls the rotating of the translation driving mechanism 41 and / or the rotating driving mechanism 42 according to the feedback information of the first position sensor, so that the position of the particle accelerator 2 can be accurately controlled to ensure that the particle accelerator 2 is aligned with the beam window 11.

[0070] The control assembly 5 can further comprise a second position sensor (not shown), which is connected with the bearing table 3 or the particle accelerator 2, and the second position sensor can also be connected with the controller 51. The second position sensor is used to detect the real-time position information of the bearing table 3 or the particle accelerator 2. By comparing the real-time position information of the particle accelerator 2 with the preset position information of the particle accelerator 2, it can be judged whether the particle accelerator 2 is aligned with the beam window 11.

[0071] The controller 51 controls the rotating of the translation driving mechanism 41 and / or the rotating driving mechanism 42 according to the feedback information of the second position sensor, so that the position of the particle accelerator 2 can be further accurately controlled. The second position sensor can be a sliding rheostat, a tensile displacement sensor, etc. In the embodiment, the second position sensor is a sliding rheostat. The second position sensor can be arranged on the moving path of the bearing table 3 or the particle accelerator 2, for example, the second position sensor can be arranged on the track 6, and the bearing table 3 or the particle accelerator 2 is provided with a contact part (not shown) connected with the second position sensor. The number of the contact parts can be one or more. The second position sensor obtains the position information of the bearing table 3 or the particle accelerator 2 by obtaining the position of the contact part on the second position sensor, that is, the second position sensor can obtain the real-time position information of the particle accelerator 2 to ensure that the particle accelerator 2 is aligned with the beam window 11.

[0072] The first position sensor and the second position sensor can be independent of each other, that is, the first position sensor and the second position sensor do not interfere with each other. In this way, the bearing table 3 has two or more independent position feedback devices, which further ensures the accuracy of the position of the bearing table 3, that is, the accuracy of the position of the particle accelerator 2, so as to ensure that the particle accelerator 2 can be aligned with the beam window 11, and then ensure that the particle beam 22 can accurately enter the treatment room 1.

[0073] In some embodiments, referring to FIG. 1, FIG. 2 and FIG. 5, a limiting device 7 for aligning with the beam window 11 in the front-rear direction can be arranged on the path where the particle accelerator 2 moves, for example, the limiting device 7 can be arranged on the track 6, and the limiting device 7 is used to mark the moving position of the particle accelerator 2. The particle accelerator 2 is installed with a scanning magnet and moves in a space shielded from radiation, so that the personnel can be protected from radiation hazards. The limiting device 7 can be a component that hinders the particle accelerator 2 or the carrier platform 3 from continuing to move, that is, the limiting device 7 is a kind of hard limiting component, for example, a limiting block or the like. The limiting device 7 can also be a sensor, for example, a Hall switch, a proximity switch or the like, and the limiting device 7 can be connected with the controller 51. When the particle accelerator 2 or the carrier platform 3 moves to the limiting device 7, the limiting device 7 can feed back the position information of the particle accelerator 2 or the carrier platform 3 to the controller 51, and the controller 51 controls the driving assembly 4 to stop operation according to the feedback information of the limiting device 7.

[0074] As an optional mode, referring to FIG. 1 to FIG. 8, the driving assembly 4 can further include an adjusting device 43 arranged on the carrier platform 3, specifically, the adjusting device 43 is arranged between the carrier platform 3 and the particle accelerator 2, and the adjusting device 43 is used for fine adjustment of the particle accelerator 2, that is, the adjusting device 43 is used for fine adjustment of the particle accelerator 2, so that the position of the particle accelerator 2 is more accurate. The adjusting device 43 can include an X-direction driving mechanism (not shown), a Y-direction driving mechanism (not shown) and a Z-direction driving mechanism (not shown), for example, the X-direction driving mechanism, the Y-direction driving mechanism and the Z-direction driving mechanism respectively include motors. The X-direction driving mechanism can drive the particle accelerator 2 to translate along the X-axis, and the X-direction driving mechanism can also drive the particle accelerator 2 to rotate around the X-axis, the Y-direction driving mechanism can drive the particle accelerator 2 to translate along the Y-axis, and the Y-direction driving mechanism can also drive the particle accelerator 2 to rotate around the Y-axis, the Z-direction driving mechanism can drive the particle accelerator 2 to translate along the Z-axis, and the Z-direction driving mechanism can also drive the particle accelerator 2 to rotate around the Z-axis. The X-direction, the Y-direction and the Z-direction are perpendicular to each other. By arranging the X-direction driving mechanism, the Y-direction driving mechanism and the Z-direction driving mechanism, the adjusting device 43 can accurately adjust the position of the particle accelerator 2 in six degrees of freedom, so that the particle accelerator 2 can be accurately aligned with the beam window 11 of different treatment rooms 1, and thus it is ensured that the particle beam 22 can accurately enter the treatment room 1.

[0075] The control assembly 5 can further comprise a third position sensor (not shown) connected to the particle accelerator 2, and the third position sensor can also be connected to the controller 51. The third position sensor is used to detect the real-time position information of the particle accelerator 2. By comparing the real-time position information of the particle accelerator 2 with the preset position information of the particle accelerator 2, it can be determined whether the particle accelerator 2 is aligned with the beam window 11. The controller 51 controls the operation of the adjusting device 43 according to the feedback information of the third position sensor, so as to further accurately control the position of the particle accelerator 2.

[0076] In an embodiment, referring to FIGS. 1, 4 and 6, the treatment room 1 can be provided with a shielding door 8, and more specifically, each treatment room 1 is provided with a shielding door 8. The shielding door 8 is used to close or open the beam window 11, and the isocenter 18 can be located on both sides of the beam window 11, respectively. The particle accelerator 2 generates radiation when it is working, and the radiation can harm the human body. The shielding door 8 can shield the radiation generated by the particle accelerator 2 from entering the treatment room 1, thereby avoiding unnecessary radiation exposure to personnel in the treatment room 1. The closing or opening of the shielding door 8 is associated with the position of the particle accelerator 2. Specifically, when the particle accelerator 2 moves out of the treatment room 1 that needs the particle beam 22, the shielding door 8 of the treatment room 1 is opened, the particle beam 22 enters the treatment room 1 through the beam window 11, and the particle beam 22 performs radiotherapy through the treatment head 9 in the treatment room 1. The shielding doors 8 of other treatment rooms 1 are in a closed state at this time, so as to avoid the radiation generated by the particle accelerator 2 from entering other treatment rooms 1. When the particle accelerator 2 moves away from a certain treatment room 1, the shielding door 8 of the treatment room 1 can be closed.

[0077] In some embodiments, referring to FIG. 8, shielding doors 8 can also be provided on the carrier platform 3, the number of shielding doors 8 can be one or more, and the shielding doors 8 can move with the carrier platform 3, i.e. the shielding doors 8 move synchronously with the particle accelerator 2, for example, the shielding doors 8 translate, rotate, etc. with the carrier platform 3. Specifically, when the particle accelerator 2 moves to the beam window 11 of one of the treatment rooms 1, the shielding doors 8 also move to the beam windows 11 of the other treatment rooms 1, and the shielding doors 8 can close the beam windows 11 of the other treatment rooms 1. When the particle accelerator 2 moves from the beam window 11 of one of the treatment rooms 1 to the beam window 11 of another treatment room 1, the shielding doors 8 also move together to the beam windows 11 of the other treatment rooms 1, and the shielding doors 8 can close the beam windows 11 of the other treatment rooms 1. In this way, the radiation generated by the particle accelerator 2 can also be prevented from entering the treatment rooms 1 that do not need the particle beam 22. For example, in FIG. 8, one particle accelerator 2 and three treatment rooms 1 arranged in sequence around the particle accelerator 2 are provided, the three treatment rooms 1 are located at the same level and are arranged at three positions (for example, the three treatment rooms 1 are located at the left side, the rear side and the right side of the particle accelerator 2) around the particle accelerator 2, and correspondingly, two shielding doors 8 are provided on the carrier platform 3. When the particle accelerator 2 moves to the beam window 11 of the treatment room 1 located at the left side, the two shielding doors 8 can move and / or rotate to the beam windows 11 of the treatment rooms 1 located at the rear side and the right side, and the two shielding doors 8 can close the beam windows 11 of the treatment rooms 1 located at the left side and the right side, respectively, to prevent the radiation generated by the particle accelerator 2 from entering the treatment rooms 1 located at the rear side and the right side; when the particle accelerator 2 moves from the beam window 11 of the treatment room 1 located at the left side to the beam window 11 of the treatment room 1 located at the rear side, the two shielding doors 8 can move and / or rotate to the beam windows 11 of the treatment rooms 1 located at the right side and the left side, respectively, to prevent the radiation generated by the particle accelerator 2 from entering the treatment rooms 1 located at the right side and the left side; when the particle accelerator 2 moves from the beam window 11 of the treatment room 1 located at the rear side to the beam window 11 of the treatment room 1 located at the right side, the two shielding doors 8 can move and / or rotate to the beam windows 11 of the treatment rooms 1 located at the left side and the rear side, respectively, to prevent the radiation generated by the particle accelerator 2 from entering the treatment rooms 1 located at the left side and the rear side.

[0078] The radiotherapy system 100 can comprise a particle beam transport system for transporting the particle beam 22 from the particle accelerator 2 to the patient, the particle beam transport system precisely transports the particle beam 22 to the treatment position by controlling the magnetic field, ensuring accurate positioning and transmission of the particle beam 22, the particle beam transport system can comprise components passed through during the particle beam transport process, such as a scanning magnet, an ionization chamber, an adaptive aperture, etc. The scanning magnet can move the particle beam 22 in the X direction and / or the Y direction by appropriately changing the magnetic field, the X direction and the Y direction being perpendicular to each other. The ionization chamber can be used to measure the dose size and / or position of the beam. The adaptive aperture can also form an adaptive aperture, which can be adaptively adjusted according to the shape and size of the target region, so that the shape and size of the particle beam 22 can match the shape of the tumor. The advantage of such adaptive irradiation is that it can better adapt to irregularly shaped tumors, improving the personalization and targeting of the irradiation plan. The combination of the scanning magnet, the ionization chamber, the range shifter (also known as the range adjuster or Range shifter) and the adaptive aperture can achieve precise and flexible radiotherapy for patients, the scanning magnet can be installed on the particle accelerator 2 outside the treatment room 1, the ionization chamber can be installed on the treatment head 9, and the range shifter and the adaptive aperture can be set as part of the treatment head 9. In this way, the treatment room 1 can be further miniaturized, making the treatment room 1 more compact and suitable for more use scenarios.

[0079] Referring to FIG. 9, the present application also provides a particle accelerator moving method for moving the particle accelerator 2 of the radiotherapy system 100 in any of the above embodiments, comprising the following steps: S100-S200.

[0080] Step S100: moving the particle accelerator 2 to the outside of the first treatment room needing the particle beam 22, the particle accelerator 2 is docked with the beam window 11 of the first treatment room, and after the beam window 11 is opened, the particle accelerator 2 starts to emit the particle beam 22 and shoots the particle beam 22 into the first treatment room through the beam window 11, the particle beam 22 is used for radiotherapy by the treatment head 9 in the first treatment room.

[0081] Specifically, the controller 51 controls the driving assembly 4 to move the particle accelerator 2 out of the first treatment room in which the particle beam 22 is needed, and aligns the beam outlet end 21 of the particle accelerator 2 with the beam window 11 of the first treatment room, and after the beam window 11 is opened, the particle accelerator 2 starts to emit the particle beam 22 (also referred to as beam flux) into the first treatment room through the beam window 11, and the particle beam 22 is radiated by the treatment head 9 in the first treatment room, i.e., the particle beam 22 can reach the patient's treatment site in the first treatment room after passing through the treatment head 9 in the first treatment room. The other treatment rooms 1 can perform treatment preparation processes that do not require the particle beam 22, such as patient positioning. The treatment head 9 can be extended or retracted in the direction of approaching or moving away from the isocenter 18.

[0082] Step S200: After the first treatment room completes the radiation treatment, the particle accelerator 2 stops emitting the particle beam 22, and then the particle accelerator 2 is moved out of the second treatment room in which the particle beam 22 is needed and is aligned with the beam window 11 of the second treatment room, and then starts to emit the particle beam 22.

[0083] Specifically, after the first treatment room completes the radiation treatment, the particle accelerator 2 stops emitting the particle beam 22, and the controller 51 controls the driving assembly 4 to move the particle accelerator 2 out of the second treatment room in which the particle beam 22 is needed, and aligns the beam outlet end 21 of the particle accelerator 2 with the beam window 11 of the second treatment room, and then the particle accelerator 2 starts to emit the particle beam 22 into the second treatment room through the beam window 11, and the particle beam 22 is radiated by the treatment head 9 in the second treatment room, i.e., the particle beam 22 can reach the patient's treatment site in the treatment room 1. The treatment head 9 can be extended or retracted in the direction of approaching or moving away from the isocenter 18, i.e., the treatment head 9 can be extended or retracted in the direction of approaching or moving away from the isocenter 18.

[0084] In a specific embodiment, moving the particle accelerator 2 out of the treatment room 1 in which the particle beam 22 is needed can be achieved by the following method.

[0085] The particle accelerator 2 can be translated out of the treatment room 1 in which the particle beam 22 is needed by the translation driving mechanism 41. Specifically, when the treatment rooms 1 are arranged in a single row in a linear type or a single column in a linear type, the particle accelerator 2 can be driven by the translation driving mechanism 41 to translate along the track 6 out of the treatment room 1 in which the particle beam 22 is needed, and the beam outlet end 21 of the particle accelerator 2 is aligned with the beam window 11 of the treatment room 1.

[0086] The particle accelerator 2 can also be rotated out of the treatment room 1 where the particle beam 22 is needed by the rotation driving mechanism 42. Specifically, when the treatment room 1 is arranged around the particle accelerator 2, the particle accelerator 2 can be driven by the rotation driving mechanism 42 to rotate the carrier platform 3 out of the treatment room 1 where the particle beam 22 is needed, and the beam exit end 21 of the particle accelerator 2 is aligned with the beam window 11 of the treatment room 1.

[0087] When the treatment room 1 is arranged in a single row, a single column, a double row, a double column, or a multi-row, the particle accelerator 2 can be driven by the translation driving mechanism 41 and the rotation driving mechanism 42 to translate or rotate the carrier platform 3 out of the treatment room 1 where the particle beam 22 is needed, and the beam exit end 21 of the particle accelerator 2 is aligned with the beam window 11 of the treatment room 1.

[0088] As an optional way, the position of the particle accelerator 2 can also be precisely adjusted in six degrees of freedom by the X-direction driving mechanism, the Y-direction driving mechanism, and the Z-direction driving mechanism of the adjusting device 43, so that the particle accelerator 2 is accurately aligned with the beam window 11 of the treatment room 1, and the particle beam 22 can be accurately injected into the treatment room 1.

Claims

1. A multi-chambered particle therapy chamber, wherein, include: Multiple treatment rooms, each of which is provided with an entrance and a beam window corresponding to the beam output end of a particle accelerator outside the treatment room, the beam window and the entrance being located on different sides of the treatment room; The treatment chamber does not contain a particle accelerator, nor does it contain a scanning magnet, a diode magnet, or a quadrupole magnet. The treatment chamber contains a treatment head corresponding to the beam window. The treatment chamber has an isocenter point. The beam window is configured to be closed but open at different times. The beam window is configured to open when the beam exit end of the particle accelerator moves to the position corresponding to the beam window. The treatment room includes a front wall, a rear wall, a left wall, and a right wall. The entrance is located between the front wall and the left wall. The beam window is separated from the entrance by a partition wall, which is connected to the left wall. The partition wall is separated from the right wall by a certain distance, forming an opening for the patient to pass through. The beam window is opened through the rear wall, and the treatment head is installed on the inner side of the rear wall. Along the direction in which the beam passes through the beam window, the projection of the isocenter point on the partition wall is located within the projection of the beam window on the partition wall. The treatment room also includes a support device for supporting the patient and moving the patient to an isocenter point so that the beam irradiates the patient in a predetermined direction.

2. The multi-chambered particle therapy chamber of claim 1, wherein, The treatment head is designed to be retractable along the direction of the beam window.

3. The multi-chambered particle therapy chamber of claim 1, wherein, The treatment head is mounted and fixed on the rear wall. The treatment chamber does not have a rotating frame, and the beam output direction of the treatment head is fixed.

4. A radiotherapy system wherein, include: The multi-chamber particle therapy chamber as described in any one of claims 1-3; A particle accelerator is provided, which generates a particle beam. The particle accelerator is a single unit that can be moved to different locations outside the treatment room and aligned with the beam window. The particle accelerator shoots the particle beam into the treatment room through the beam window. The particle beam is then used for radiotherapy through a treatment head inside the treatment room. The radiotherapy system does not have a diode or quadrupole magnet.

5. The radiotherapy system of claim 4, wherein, It also includes a support platform, a drive assembly, and a control assembly. The control assembly includes a controller for controlling the drive assembly. The particle accelerator is disposed on the support platform. The drive assembly is used to drive the support platform to move. The support platform is used to drive the particle accelerator to move. The movement of the particle accelerator includes one or more of the following: translation along the horizontal direction, translation along the vertical direction, rotation along the horizontal direction, and rotation along the vertical direction.

6. The radiotherapy system of claim 5, wherein, The drive assembly includes a translation drive mechanism for driving the support platform to translate, thereby translating the particle accelerator to different locations outside the treatment chamber; and / or The drive assembly further includes a rotary drive mechanism for driving the platform to rotate, thereby rotating the particle accelerator to different locations outside the treatment chamber.

7. The radiotherapy system of claim 6, wherein, The control assembly further comprises a first position sensor connected with the translation driving mechanism and / or the rotation driving mechanism, the first position sensor being configured to detect the rotation movement of the translation driving mechanism and / or the rotation driving mechanism to obtain the position information of the carrier table; and / or, The control assembly further comprises a second position sensor connected with the carrier table or the particle accelerator, the second position sensor being configured to detect the position information of the carrier table or the particle accelerator.

8. The radiotherapy system of claim 5, wherein, The driving assembly further comprises an adjusting device arranged on the carrier table, the adjusting device comprising an X-direction driving mechanism, a Y-direction driving mechanism and a Z-direction driving mechanism, the X-direction driving mechanism being configured to drive the particle accelerator to translate along an X-axis and / or to rotate around the X-axis, the Y-direction driving mechanism being configured to drive the particle accelerator to translate along a Y-axis and / or to rotate around the Y-axis, and the Z-direction driving mechanism being configured to drive the particle accelerator to translate along a Z-axis and / or to rotate around the Z-axis, the X-direction, the Y-direction and the Z-direction being perpendicular to each other.

9. The radiotherapy system of claim 8, wherein, The control assembly further comprises a third position sensor connected with the particle accelerator, the third position sensor being configured to detect the position information of the particle accelerator.

10. The radiotherapy system of claim 5, wherein, The treatment room is provided with a shielding door configured to close or open the beam window, the shielding door being located on the two sides of the isocenter of the beam window; and / or, The carrier table is provided with a shielding door, the shielding door being capable of moving with the carrier table, the shielding door being configured to close the beam window of other treatment room when the particle accelerator moves to the beam window of one of the treatment rooms.

11. The radiotherapy system of claim 4, wherein, The particle accelerator is arranged on a track, the particle accelerator moving to different treatment rooms through the track, the extension direction of the track being parallel to the extension direction of the center line of the beam window.

12. The radiotherapy system of claim 4, wherein, The path of the particle accelerator is provided with a limiting device configured to align with the beam window in the front-back direction, the limiting device being configured to mark the moving position of the particle accelerator, the particle accelerator being provided with a scanning magnet, and the particle accelerator moving in a radiation shielding space.

13. A particle accelerator moving method, wherein, The particle accelerator moving method is used for moving the particle accelerator of the radiotherapy system according to any one of claims 4-12, and comprises the following steps: The particle accelerator is moved to the first treatment room requiring particle beam, the particle accelerator is docked with the beam window of the first treatment room, and after the beam window is opened, the particle accelerator starts to emit beam and shoots particle beam into the first treatment room through the beam window, the particle beam being used for radiotherapy through the treatment head in the first treatment room; After the first treatment room completes radiotherapy, the particle accelerator stops emitting beam, and then moves to the second treatment room requiring particle beam and is docked with the beam window of the second treatment room, and then starts to emit beam.

14. The particle accelerator moving method of claim 13, wherein, The method for moving the particle accelerator outside the treatment room where the particle beam is needed comprises: translating by a translational drive mechanism outside the treatment room where the particle beam is needed; and / or, rotating the particle accelerator by a rotational drive mechanism outside the treatment room where the particle beam is needed; and / or, precisely adjusting the position of the particle accelerator in six degrees of freedom by adjusting the X-direction drive mechanism, the Y-direction drive mechanism and the Z-direction drive mechanism of the device, so as to accurately align the particle accelerator with the beam window of the treatment room.

Images